A bank of fog composed entirely of tiny, razor-sharp ice shards billows out from the targeted point. The fog obscures all sight, including darkvision, beyond 5 feet. A creature 5 feet away has concealment (20% miss chance). Creatures father away have total concealment (50% miss chance, and the attacker can't use sight to locate the target).

In addition, the sharp ice particles tear the skin of those moving through the area, causing 4 points of damage per round, half of which is cold damage.

A strong wind (21+mph) disperses the fog in 4 rounds; a severe wind (31+mph) disperses the fog in 1 round. Dispersing the fog in this manner, however, causes damage to those within its area as the icy shards whip past. A strong wind causes 4 points of damage per round (half cold); a severe wind causes 8 points of damage (half cold).